CVE-2026-82291

HeyForm before 3.0.0-rc.8 reflects the request Origin header in CORS responses while allowing credentials, enabling cross-origin requests with authentication. Attackers can execute authenticated GraphQL queries from malicious pages visited by logged-in users to access workspaces, projects, forms,...

CVE-2026-79237

A flaw was found in Google Chrome's Navigation component. This incorrect authorization vulnerability allows a remote attacker to bypass the web origin policy by enticing a user to visit a specially crafted HTML page. This could lead to unauthorized access to sensitive information or actions acros...

CVE-2026-78942

A flaw was found in the Loader component of Google Chrome. This vulnerability, caused by incorrect reference resolution, allows a remote attacker to bypass the web origin policy by sending specially crafted network traffic. Bypassing the web origin policy can lead to unauthorized access to...

CVE-2026-78946

A flaw was found in Google Chrome. This incorrect authorization vulnerability in the 'Select' component allows a remote attacker to bypass the web origin policy by crafting a malicious HTML page. This could lead to unauthorized access to sensitive information or actions across different web origi...

CVE-2026-78903

A flaw was found in Google Chrome's Site Isolation feature. This vulnerability, caused by an incomplete cleanup process, could allow a remote attacker to bypass site isolation. To exploit this, the attacker must first compromise the browser's renderer process and then use a specially crafted HTML...

CVE-2026-79085

A flaw was found in Chromium's Network component. A remote attacker, after compromising the renderer process, could exploit missing authorization to bypass the web origin policy by crafting a malicious HTML page. This could lead to unauthorized access to sensitive information or actions across...

CVE-2026-79082

A flaw was found in the Transactions Platform of Google Chrome. An attacker who has compromised the renderer process could exploit an incorrect authorization vulnerability by crafting a malicious HTML page. This could allow them to bypass the web origin policy, potentially leading to unauthorized...

CVE-2026-79205

A flaw was found in Google Chrome. This incorrect authorization vulnerability in the browser's Network component allows a remote attacker to bypass the web origin policy. By enticing a user to open a specially crafted HTML page, an attacker could potentially gain unauthorized access to sensitive...

CVE-2026-79116

A flaw was found in Viz in Google Chrome. Missing authorization allowed a remote attacker, who had already compromised the renderer process, to bypass the web origin policy. This could be achieved by tricking a user into visiting a specially crafted HTML page, potentially leading to unauthorized...

CVE-2026-79093

A flaw was found in Paint in Google Chrome. This incorrect authorization vulnerability allows a remote attacker to potentially bypass the web origin policy by crafting a malicious HTML page. This could lead to unauthorized access to sensitive information or actions across different web origins...

CVE-2026-53656

FiftyOne is an open-source platform for refining high-quality datasets and visual AI models. Prior to 1.17.0, the FiftyOne App/API server in fiftyone/server/app.py and the /media route in fiftyone/server/routes/media.py unconditionally return Access-Control-Allow-Origin: . Because the embedded...

CVE-2026-74970

A site isolation flaw in Mozilla's Graphics component affects Firefox and Thunderbird. The issue allows a remote, unauthenticated attacker to potentially access or modify data in other process contexts via a crafted web page. Fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbi...

firefox: thunderbird: Site isolation issue in the Networking component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Site isolation issue in the Networking component...

firefox: thunderbird: Site isolation issue in the Networking: HTTP component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Site isolation issue in the Networking: HTTP component...

CVE-2026-70599 Electron: Permission Check Handler Receives Main Frame Origin Instead of Requesting Iframe Origin

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1, serial-port and media permission checks made from an iframe passed the top-level frame origin to session.setPermissionCheckHandler instead of...

CVE-2026-17823

A flaw was found in Google Chrome's WebXR component. This vulnerability, caused by insufficient policy enforcement, could allow a remote attacker to bypass the same-origin policy. By crafting a malicious HTML page, an attacker could exploit this to gain unauthorized access to sensitive informatio...

PYSEC-2026-3483 MCP Python SDK: WebSocket server transport does not support Host/Origin validation

Summary In affected versions, the deprecated WebSocket server transport mcp.server.websocket.websocketserver accepted the WebSocket handshake without applying any Host or Origin header validation. The TransportSecuritySettings mechanism that the SSE and Streamable HTTP transports use for this...

PYSEC-2026-3539 sanic-cors contains an improper regular expression in the try_match() function

sanic-cors version 2.2.0 and prior contains an improper regular expression in the trymatch function in saniccors/core.py that uses re.match without end-anchoring. This allows an attacker to bypass CORS origin allowlists by registering a domain that begins with a trusted origin string, to gain...

CVE-2026-47671 Nhost CLI local configserver allows cross-origin unauthenticated read/write access to local development configuration and secrets

Nhost is an open source Firebase alternative with GraphQL. In versions of Nhost CLI prior to 1.46.0, the hidden nhost configserver used by nhost dev exposes the Mimir GraphQL API with dummy authorization directives and permissive CORS. When a developer is running the local development environment...

MCP Python SDK: WebSocket server transport does not support Host/Origin validation

Summary In affected versions, the deprecated WebSocket server transport mcp.server.websocket.websocketserver accepted the WebSocket handshake without applying any Host or Origin header validation. The TransportSecuritySettings mechanism that the SSE and Streamable HTTP transports use for this...